China's laws stipulate when the invention patent right will take effect.

The invention patent right shall take effect as of the date of announcement. If the application for a patent for invention is rejected after substantive examination, the administrative department for patent in the State Council shall make a decision to grant the patent right for invention, issue a patent certificate for invention, and register and announce it at the same time. Where an application for a patent for utility model or design is rejected after preliminary examination, the administrative department for patent in the State Council shall make a decision to grant a patent for utility model or design, issue a corresponding patent certificate, and register and announce it at the same time. The patent right for utility model and the patent right for design shall take effect as of the date of announcement.

patent law of the people's republic of china

Article 39

If the application for a patent for invention is rejected after substantive examination, the administrative department for patent in the State Council shall make a decision to grant the patent right for invention, issue a patent certificate for invention, and register and announce it at the same time. The invention patent right shall take effect as of the date of announcement. Article 40

Where an application for a patent for utility model or design is rejected after preliminary examination, the administrative department for patent in the State Council shall make a decision to grant a patent for utility model or design, issue a corresponding patent certificate, and register and announce it at the same time. The patent right for utility model and the patent right for design shall take effect as of the date of announcement.